Crossed hole processing method
A processing method, the technology of cross holes, applied in the field of processing of cross holes, can solve the problems of the distance difference between the center of the large hole and the center of the small hole, the tool is easy to shift, etc., and achieve the effect of saving manufacturing cost and simple process operation
Inactive Publication Date: 2012-06-27
湖北华阳汽车变速系统股份有限公司
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Problems solved by technology
[0002] The existing processing method for cross holes is: process the large hole first, then install the filling shaft in the large hole and then process the small hole. The matching gap between the filling shaft and the large hole and the hardness of the substrate of the workpiece are different, and the tool is easy to shift during processing. , the distance between the center of the big hole and the center of the small hole is too poor
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[0008] Such as figure 1 As shown, taking the part 1 to be processed as an example, the present invention is described as follows: first process the small hole 2, pre-position with the small hole 2, when processing the large hole 3, use a step drill 4, the radius of the step drill minor diameter 4a is smaller than the small hole 2 The outer generatrix to the center distance of the large hole 3, when the large diameter of the step drill 4 cuts in, the step drill minor diameter 4a has passed the small hole 2, thereby ensuring the center distance of the two intersecting holes.
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The invention provides a crossed hole processing method, which comprises the steps that: firstly, a small hole is processed, the small holes is used for prepositioning, a step drill is adopted during large hole processing, the radius of the minor diameter of the step drill is smaller than the center distance from an outer bus of the small hole to a large hole, and when the major diameter of the step drill is cut into the small hole, the minor diameter of the step drill passes through the small hole, so the distance from the large hole center and the small hole center is ensured. The crossed hole processing method has the advantages that the center distance of the two crossed holes can be ensured, a filling shaft is omitted, the manufacture cost is saved, and the process operability is simple.
Description
technical field [0001] The invention relates to a processing method of a cross hole. Background technique [0002] The existing processing method of cross holes is: process the large hole first, then install the filling shaft in the large hole and then process the small hole. The matching gap between the filling shaft and the large hole and the hardness of the substrate of the workpiece are different, and the tool is easy to shift during processing. , The distance between the center of the large hole and the center of the small hole is out of tolerance. Contents of the invention [0003] In order to avoid the distance between the center of the large hole and the center of the small hole being out of tolerance in the processing of the cross hole, the present invention proposes a processing method for the cross hole. [0004] The technical solution of the present invention is: a processing method for cross holes, which is characterized in that: the small hole is processed f...
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IPC IPC(8): B23B35/00
Inventor 李建明李文青姚世煜
Owner 湖北华阳汽车变速系统股份有限公司